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Rules: In order for a solution to count, a full derivation or proof must be given. Answers with no proof will be ignored. Solutions will be posted around 15th of the following month. It is fine to use nontrivial results without proof as long as you cite them and as long as it is "common knowledge to all mathematicians". Whether the latter is satisfied will be decided on a case-by-case basis...

Recent Insights

When Vehicle Power Dictates Acceleration
[IMG]One interesting problem when dealing with a vehicle of a certain mass is to determine what is required in order to get the maximum acceleration while going from...

The Quantum Mystery of Wigner’s Friend
[IMG]In this Insight I will introduce the quantum mystery called “Wigner’s friend” using Healey’s version [1] of Frauchiger and Renner’s version [2] of Wigner’s...

Inconsistency versus lack of knowledge
In traditional logic, a system is inconsistent if it can lead to a contradiction. Furthermore, if the inconsistency is non-explosive (not all consequences follow from...